Why is there a foul smell coming from my toilet?

Author: Dr. Marvin Wiegand DVM  |  Last update: Sunday, December 14, 2025

Occasionally, bacteria can travel from the pipes to your toilet bowl. While fresh toilet water and routine cleanings can help, hot and humid weather creates the perfect conditions for bacteria to multiply rapidly. Bacterial buildup can produce a foul smell, resembling sewage or rotten eggs.

How do I get rid of sewer smell in toilet?

Create a mixture of baking soda and vinegar, and pour it down the drains. Let it sit and start to work before flushing it with hot water, which should do the trick. Another trick you can use is to place coffee grounds or activated charcoal in a bowl in the bathroom to absorb the odors.

Why does my toilet smell like sewage but no leak?

You could have one of several issues on your hands. A sewer gas smell in the bathroom can be caused by: evaporation of water in the P-trap piping. broken seal around the toilet in the wax ring or the caulk.

What is the foul smell coming from the toilet?

Bacteria is in Your Toilet

Even though you have probably scrubbed and scrubbed your toilet, the smell coming from the toilet might still be lingering. One reason for this could be microorganisms seeping into the toilet bowl and staying there. This is common during the summer months when it is hot and humid.

How do you get rid of a smelly toilet?

White vinegar and baking soda in equal parts are a cost-efficient and effective means of getting rid of odors in a toilet. Add them to the tank, mix them in and then use the toilet brush to gently scrub the tank. Let it sit for a few hours, scrub the tank again and flush.

It cleans the drain better than a machine. The stench disappears

How to keep your toilet bowl smelling fresh?

Baking Soda: This is your main cleaning agent. It's going to help you scrub away all the grime in your toilet bowl. Vinegar: Vinegar acts as a natural disinfectant, which is great for eradicating germs. Dish Soap: Regular, unscented dish soap will add some extra cleaning power to this mixture.

Should you caulk around a toilet?

Reasons to Caulk Around a Toilet

Moisture Prevention: Without caulk around the toilet base, external water can seep under the toilet, leading to floor and subfloor damage over time. This is especially important in bathrooms with wooden floors, as prolonged exposure to moisture can lead to rot and structural issues.

How do I stop my toilet from smelling like poop?

Here are some tips of getting rid of that poop smell.
  1. Courtesy flush. Seriously, the courtesy flush is your best friend when it comes to pooping. ...
  2. Ventilate. You can open up a window or turn on the exhaust fan, and leave it running after you leave. ...
  3. Check your purse. ...
  4. Just give a warning. ...
  5. Install a PURE-D.

What is the best toilet bowl cleaner?

Our Top Picks
  • Best Overall: SALE. ...
  • Best Tablet: Clorox Foaming Toilet Bombs at Amazon $10. ...
  • Best Wand: Clorox Disinfecting ToiletWand Cleaning System at Amazon $14. ...
  • Best for Septic Systems: Clorox Scentiva Toilet Cleaning Gel at Amazon $9. ...
  • Best Automatic: ...
  • Best for Tough Stains:

Will caulking a toilet stop sewer smell?

In addition, urine and water can get under your toilet and cause further damage. Apply caulking to form a protective coating around your toilet base and combat bad odors.

How to tell where sewer smell is coming from?

Where is the odor coming from? Check your home's drains, toilets, and plumbing fixtures for any signs of leaks or damage. Look for cracks, loose connections, or broken seals allowing sewer gas to escape. Additionally, inspect your sewer vents on the roof or outside your home for any obstruction or damage.

How to fix a dry P-trap in a toilet?

Slowly pour about a gallon of water into the drain. This will refill the trap and recreate the seal to block sewer gases. For long-term prevention, consider adding a small amount of mineral oil on top of the water in the P-trap.

Why does my toilet smell like urine even after I clean it?

Mineral deposits and urine stains in your toilet can create an environment where mould or bacteria will thrive. The organisms can come through your pipes and settle under the toilet rim, around the seat, or at the bottom of the bowl. They'll eventually produce foul smells that can be similar to urine.

Why does my bathroom smell like sewage but no leak?

Dry, Dirty, or Broken P-Trap

Thankfully, the solution for this is simple: just run your tap for a few minutes to replenish the water in your P-trap. If that doesn't solve the issue and a sewage smell persists, chances are your P-trap is broken. In this instance, you need to call a plumber immediately.

Why does sewer smell come and go?

Key Takeaways. Dry P-traps can cause sewer gases to escape and create foul odours. Blocked vent pipes can prevent proper airflow, leading to sewage smells in your home. Cracked sewer pipes may release gases into your house and cause unpleasant smells.

What are the symptoms of sewer gas poisoning?

Irritated eyes, nose, throat, and respiratory system, including tearing of eyes, cough, or shortness of breath. Effects may be delayed. Severe eye and respiratory irritation such as coughing and difficulty breathing. These symptoms may be accompanied by headache, dizziness, nausea, vomiting, and more.

What do plumbers recommend to clean toilets?

Baking Soda and Vinegar

Baking soda is also a mild abrasive, so it will remove stains and grime from your toilet bowl. To clean your toilet, use one cup of baking soda with two cups of white vinegar. Brush it into the bowl, let it sit for five minutes, then flush again with the water on full force.

Where to place toilet disinfectant balls?

Simply drop a ball into the toilet bowl and let its powerful formula work like magic.

What is the best cleaner for toilet smell?

Both white vinegar and baking soda will eliminate smelly bacteria and break down any minerals that may have built up from your water supply. You can also introduce this mixture into your toilet bowl. Just let it sit for 10-15 minutes before you flush!

How do I get rid of a bad smell in my toilet?

White vinegar and baking soda in equal parts is a cost-efficient and effective means of getting rid odors in a toilet. Add them to the tank, mix them in and then use the toilet brush to gently scrub the tank. Let it sit for a few hours, scrub the tank again and flush.

How do I keep my toilet from smelling good?

Use a toilet deodorizer or air freshener. In addition to that, you can place detergent powder/softener in the cistern. So, whenever the toilet is flushed, the scented water brings a touch of freshness to the surrounding air.

How often should you Recaulk a toilet?

Signs It's Time to Recaulk Your Bathroom
  1. Mold or mildew beneath the surface of the caulk, indicating water leakage.
  2. Caulk is older than five years.
  3. Dried out or cracked caulk.
  4. Peeling or missing caulk.

Is it better to put wax ring on toilet or flange?

Position the new toilet wax ring on top of the toilet flange, ensuring it is centered. Want to know more about choosing the correct wax ring size, crucial installation tips, and other frequently asked questions?

What happens if toilet isn't caulked?

Caulk prevents smell

Yes, the bathroom is a place to get clean, but it can easily be a place to trap some pretty foul smells. If you don't caulk a toilet to the floor, you could find yourself smelling leftover residue from smelly mop water, tub water, or even worse, the remnants of your son's potty training.

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